Common pre-treatment symptoms are leg and ankle swelling, pain, cramping, restless legs, and/or a feeling of heaviness in the leg. RFA is a minimally invasive procedure that uses heat energy to eliminate unhealthy veins. Once the vein is closed, blood flow is re-routed to healthier veins, and the body reabsorbs this unhealthy vein over time. Optimized blood flow is noticeable by reversal of symptoms. (Legs look and feel better.)